What Republican Senator had his hand on David Brooks's inner thigh through an entire dinner?

Brooks is talking on MSNBC — video at the link — and says:

You know, all three of us spend a lot of time covering politicians and I don’t know about you guys, but in my view, they’re all emotional freaks of one sort or another. They’re guaranteed to invade your personal space, touch you. I sat next to a Republican senator once at dinner and he had his hand on my inner thigh the whole time. I was like, ehh, get me out of here....

I’m not telling you, I’m not telling you. But so, a lot of them spend so much time needing people’s love and yet they are shooting upwards their whole life, they’re not that great in normal human relationships. And so, they’re like freaks, they don’t know how to, they’re lonely. They reach out....

What!? Perhaps the Republican Senator just periodically patted him on the thigh and technically the fingers extended into the inner part. The fact that Brooks put up with it, to me, indicates that was all it was. Why would he just think I was like, ehh, get me out of here. What stopped him from leaving? Or are we seriously to think some Senator had Brooks in an intimate grip all night and Brooks did nothing but think about how he didn't like it?